Delay Valve Time Test
- Connect appropriate side of delay valve to an external vacuum source set at 10" Hg. See chart below.
- Connect a 24" length of vacuum hose and vacuum gauge to the other side of the delay valve.
- Apply vacuum, observe gauge and note time, in seconds, required to go from 0-8" Hg.NOTE: A steady 10" Hg must be applied by external vacuum source during this test.
- Compare time to appropriate time chart below. If delay valve tested does not come within time limits, replace valve and repeat test.
Delay Valve Testing Attachments
| Valve Type | Vac. Source Side | Vac. Gauge Side |
|---|---|---|
| Vacuum | Black | Color |
| Retard | Color | White |
| Two-Way | ..... | ..... |
| Vacuum Vent | I.D. No. | ..... |
| Air Cleaner | Color | White |
Delay Valve Time Specifications (in Seconds)
| Application | Min. Delay | Max. Delay | |
|---|---|---|---|
| Vacuum Delay Valve | |||
| Black & Gray | 0.6 | 1.6 | |
| Black & Brown | 1.0 | 3.0 | |
| Black & White | 2.7 | 9.3 | |
| Black & Yellow | 4.5 | 13.2 | |
| Black & Blue | 6.8 | 18.8 | |
| Black & Green | 8.0 | 26.0 | |
| Black & Orange | 11.6 | 38.0 | |
| Black & Red | 14.0 | 47.2 | |
| Retard Delay Valve | |||
| White & Red | 14.0 | 47.2 | |
| White & Blue | 8.0 | 26.0 | |
| Two-Way Delay Valve | |||
| Brown | 1.0 | 3.0 | |
| White | 2.7 | 9.3 | |
| Yellow | 4.5 | 13.2 | |
| Green | 8.0 | 26.0 | |
| Red | 14.0 | 47.2 | |
| Vacuum Vent Delay Valve | |||
| I.D. No. 5 | 7 | 13.7 | |
| I.D. No. 20 | 16 | 36.8 | |
| I.D. No. 40 | 28 | 67.6 | |
| Air Cleaner Delay Valve | |||
| White & Red | 14.0 | 47.2 | |
| White & Green | 8.0 | 26.0 | |
| White & Blue | 8.0 | 26.0 | |